Question

what is an example of a physical access risk?

a mechanic connects a device to the obd.
a firewall is used to prevent unsafe commands.
a car can be started remotely.
a fleet of trucks is connected via a vanet.

Explanation:

Define physical access risk

A physical access risk involves a threat actor or unauthorized individual gaining direct, hands-on physical contact with a system, port, or device to compromise its security.

Analyze the given options

• A mechanic connects a device to the OBD: The On-Board Diagnostics (OBD) port is a physical interface inside a vehicle. Connecting a physical device directly to this port requires physical access to the vehicle's interior, representing a direct physical access vector/risk.
• A firewall is used to prevent unsafe commands: This is a logical security control, not a physical access risk.
• A car can be started remotely: This represents a wireless or remote access risk, not a physical one.
• A fleet of trucks is connected via a VANET: This represents a wireless networking architecture and its associated remote communication risks.

Identify the correct choice

The only option that explicitly requires direct, hands-on physical contact with the vehicle's hardware interface is connecting a device to the OBD port.

Answer:

• (A) A mechanic connects a device to the OBD. (Correct answer)
• (B) A firewall is used to prevent unsafe commands.
• (C) A car can be started remotely.
• (D) A fleet of trucks is connected via a VANET.